Filtering material



atenteclUct '7, T930 I UNITED STATES PATENTY' OFFICE .HELTRY BLUMENBERG, JR.,' 015' LOS 'ANG-ELES, CALIFORNIA FILTERING MATERIAL 1% Drawing. Appli'cation filed August 10, 1927. Serial No. 212,131.

My invention relates to a composition of In the treatment'of industrial waste liquors matter intended for use as afiltering material. and of sewerage from 100 to 500 pounds of It is an object of this invention to provide the filtering material are usually required per a filtering material which has superior puone million gallons. rifying, bleaching and germicidal properties. The liquids to be treated are either passed 55 It is adapted for thepurification, clarifica through a layer of the filtering material tion and deodorizing of mineral oil distillates under pressure, or allowed to percolate by such as gasoline, kerosene and lubricating gravity. oils, but may also be used for the purification Various changes may be made bythose 110 of water and industrial waste liquors and skilled in the art without departing from the 60 sewerage. p spirit of my invention as claimed.

My invention consists of the composition I claim: i J v of matter hereinafter described and claimed. 1. A filtering material for use as a purify- I take'zinc sulphate ZnSO .7H O WhiCl1, ing, deodorizing and oxidizing agent, conas shown by the formula, is associated With taini-ng zinc sulphate, calcium hypochlorite, B5

seven molecules of Water of crystallization. nd n in t, ll la mat rial, The zinc sulphate is now mixed with calcium 2, A filt in at ri l fo us as a urif h'ypochlorite Ca(OO l) Both ingredle tsing, deodorizing and oxidizing agent, conare ground to afineness of -100 Scre taining Zinc sulphate, calcium hypochlorite, 20 mesh. T take'about 65 pounds of zinc suld a di tomac us arth, T0

geneous mass.

.40 One-half to five percent by Weight of the phate and pounds of calcium hypoc ql f e 3. A filtering material for use as a purifyd addiherew from 10 0 3O'P011I1ClS 0f ing, deodorizing and oxidizing agent, coninert cellular material, preferably ground to taining zinc sulphate, calcium hypochlorite', a fineness 0f u 20"t0 100 ee mesh- .the proportions by Weight being about two 4 25 Material suitable for thispurpose is pumice, (2) parts f i l h t t one (1) t f 75 diatomaceou's earth, charcoal, Wood fibre, as calcium hypochlorite, and an inert cellular bestosand the like. Thecellular' material t i L 1 themiXtuIfi 0f s pha and calcium 4. A filtering material-for use as a purifyhypochlorite are agitatedto form a homoi deodopizing a d oxidizing a nt con- 4 taining the following ingredients inapproxi- The zinc sulphate and calcium hypochlorite t i the proportions t t d;

- will not react in thedry' state but only 1n -Pounds the-presence of Water or when in contactwith Z1nc sulphate organic matter, roducing calcium sulphate Calcium hypochlor1te 35 a 5 CaSO zinc ch oride' ZnGl and chlorine- D1ato1naceous earth 10 to 30 dioxide (310;. It is the chlorine dioxide'whicjh is the powerful oxidizing agent clarifying and deodorizing the liquids to be treated as well as destroying bacteria. and germs.

In testimony whereof I have signed my name to this specification. i

HENRY BLUMENBERG'. JR.

filteringl material ,thus prepared is usually sufficient for the clarification anddeodoriz'ation of mineral oil distillates. For the purification of water 25 pounds of the filtering material to one million gallons of water is sut ficient. It may be noted here that the chlorine dioxide in contra-distinction to the chlorine, which is sometimes used for water purification, leaves no disagreeable odor. The slight 'odor present resembles that of ozone v, I I a 

